DO NOT USE FULL Service Insulation (FSI) of Waterford, MI for your Crawlspace encapsulation! I made the mistake of doing this in 2012 and 2 years later, I just spent $12,000 fixing a problem they caused.
The biggest problem is that FSI uses spray foam as an adhesive to (attempt to) seal their cheap 6-mil plastic sheeting together. Spray foam is not an adhesive and in my case, the seals broke and water sat on top of their plastic sheeting.
Then my floors began to sink. A Structural Engineer's report said that the water sitting on top of the plastic (which leaked in thru the broken seals) in this almost-sealed crawl space had made the wood soggy and lose structural support,
making the floor sink. There was some black mold, but not much. The toilet also starting to leak as the floor was no longer level.
At the time FSI did the work, I was happy - but then, how many people go back in their crawl space after a year or two? The only reason I did was when I noticed tiles and walls cracking as the flooring sagged.
And just to make matters worse, FSI knocked off the flexible venting to a heater in the family room, which meant I didn't have heat from this vent during the Winters on 2012-13 and 2013-14.
If you want to see proof that Full Service Insulation of Waterford, MI doesn't believe in their own techniques, write the following in their contract before work begins and before you pay them anything: The platic sheeting must be taped
together usng both a double-sided tape and a sealer tape on top of that. In no case will spray foam be allowed to be used as an adhesive for joining the plastic sheets. If there is any damage to the house or structure, FSI will be
required to hire Foundation Systems of Michigan (Livonia, MI) to remedy any and all problems and Full Service Insulation will pay 100% of the cost. Make sure to check all of your HVAC ducts before paying any contractor who is working in
the crawl space and may have dislodged your duct work.
Foundation Systems of Michigan (FSM) has a proprietary 120-mil (as opposed to FSI's 6-mil) plastice sheeting. They tape all seams twice. It comes with a 25-year transferrable warranty. Ask FSI what their warrant is or if they even have one. read more